Carlson lasted two seasons into a five-year, $25 million contract that left NFL observers scratching their heads in March of 2012. He collected $9.55 million in guarantees over two seasons while contributing 40 receptions, 387 yards and one touchdown.

After his third NFL concussion ended his 2013 season, Carlson acknowledged retirement as an option. As evidenced by his unsuccessful contract discussions, it appears that the 29-year-old has decided to play a seventh season.

The Vikings have plenty of salary-cap space to spare. They didn't need the $2 million in savings, which suggests this was strictly a football decision.